Science pg2

Question 1

The distance from your waist to the floor could be about:

Answer 1

1 meter or 1m

Question 2

One-hundred centimeters equals:

Answer 2

1 meter

Question 3

The distance from Terraset to the nearest 7-Eleven is about:

Answer 3

1 Kilometer or 1km

Question 4

One thousand meters equals:

Answer 4

1 kilometer or 1km

Question 5

In an experiment to measure the how different types of soil affect tulip growth, you fill five identical pots with different types of soil and place a tulip bulb in each. The independent variable in the experiment is the:

Answer 5

soil

Question 6

The pots, tulip bulbs, water and amount of sunlight are should be the same for all of the pots. These are the:

Answer 6

constants

Question 7

For accuracy, you perform the experiment many times. In the first three trials, the tulip in sandy soil grows only 10 cm tall before dying. The 4th trial, the tulip grows 15 cm tall and flowers. Which results in unusual?

Answer 7

The 4th trial (15 cm) because it is different from the others.

Question 8

Objects in motion have ________ energy.

Answer 8

Kinetic

Question 9

Potential energy is _______energy.

Answer 9

stored

Question 10

Due to the pull of gravity, the higher an object is off the ground, the more ________ it has.

Answer 10

potential energy

Question 11

When I hold a ball in the air, it has potential energy. When I let go, the ball starts to fall. Potential energy changes to:

Answer 11

kinetic energy

Question 12

There are many forms of energy. Energy caused by the movement of electrons is:

Answer 12

electrical energy

Question 13

Energy stored in food, batteries and fossil fuels like coal and gasoline is:

Answer 13

chemical energy

Question 14

Energy in moving or spinning objects like gears, car wheels, or joggers, is ______ energy:

Answer 14

mechanical

Question 15

Machines make work easier and help us work more:

Answer 15

efficiently

Question 16

The six simple machines are:

Answer 16

inclined plane, pulley, lever, screw, wedge, and wheel & axle.

Question 17

A combination of two more simple machines is a:

Answer 17

compound machine

Question 18

Machines made of many compound machines are:

Answer 18

complex machines

Question 19

An object that is sharp, like a knife, ax or nail is a:

Answer 19

wedge

Question 20

Doorknobs, screwdrivers, and wheels of all sorts are:

Answer 20

wheel and axles

Question 21

A seesaw, crowbar, shovel, and nutcracker are:

Answer 21

levers